CN107956687A - Compressor, operation control method thereof and air conditioner - Google Patents
Compressor, operation control method thereof and air conditioner Download PDFInfo
- Publication number
- CN107956687A CN107956687A CN201710934047.9A CN201710934047A CN107956687A CN 107956687 A CN107956687 A CN 107956687A CN 201710934047 A CN201710934047 A CN 201710934047A CN 107956687 A CN107956687 A CN 107956687A
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- valve
- pipe
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims description 58
- 238000007906 compression Methods 0.000 claims description 58
- 239000003507 refrigerant Substances 0.000 claims description 50
- 125000006850 spacer group Chemical group 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 20
- 230000033228 biological regulation Effects 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 10
- 238000009966 trimming Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 6
- 230000008901 benefit Effects 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000009977 dual effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000003434 inspiratory effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/3446—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
- F04C18/3447—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface the vanes having the form of rollers, slippers or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention provides a compressor, an operation control method thereof and an air conditioner. The compressor comprises a first cylinder (1), a second cylinder (2) and a switching mechanism, wherein the volume of the first cylinder (1) is larger than that of the second cylinder (2), the compressor has a first working state that the first cylinder (1) serves as a first-stage cylinder and the second cylinder (2) serves as a second-stage cylinder, the second cylinder (2) serves as a first-stage cylinder and the first cylinder (1) serves as a second-stage cylinder, and the switching mechanism is used for enabling the compressor to be switched between the first working state and the second working state. According to the compressor, the working state of the air cylinder of the compressor can be adjusted according to the working condition, and the working energy efficiency of the compressor is improved.
Description
Technical field
The invention belongs to Compressor Technology field, and in particular to a kind of compressor and its progress control method, air conditioner.
Background technology
Existing Dual-level enthalpy adding compressor, general its are more than as the upper of secondary cylinder as the lower cylinder volume of level-one cylinder
Volume of cylinder, compression sequence are first lower cylinder air-breathing compression, are discharged into intermediate cavity, the gas coolant from system intermediate pressure is mended
For gas in intermediate cavity, then another rise sucks cylinder by upper cylinder, completes compression.As environment temperature declines, the ratio of refrigerant
Hold increase, the unit inspiratory capacity of compressor is reduced, and causes the heating capacity of compressor to decline to a great extent.In order to improve this problem, extensively
It is general that air-conditioning heating ability and efficiency under low temperature environment are improved using Dual-level enthalpy adding compressor.But current Dual-level enthalpy adding compressor is high
For low pressure volume than fixed design, the adaptability changed to seasonal temperature is poor, therefore can substantially reduce rolling rotor-type compression
The working performance of machine.
Above-mentioned compressor positive effect in ultralow temperature heating and superhigh temperature refrigeration, Dual-level enthalpy adding compressor is in low evaporation temperature
Have a clear superiority under degree or high compression ratio operating mode, but during for common summer medium temperature refrigeration or non-super low-temperature heating etc. is not severe
Operating mode when, due to pressure ratio and little, using two stages of compression, the increase of back pressure cavity volume, causes the reduction of pump housing efficiency.In addition, by
More much larger than secondary cylinder in level-one cylinder, it is larger to result in second vapor injection cavity pressure, is unfavorable for tonifying Qi, and effect is lifted to efficiency
It is poor.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to provide a kind of compressor and its progress control method, air conditioner,
Compressor operating efficiency can be improved according to the gas cylinder working condition of Operating condition adjustment compressor.
To solve the above-mentioned problems, the present invention provides a kind of compressor, including the first cylinder, the second cylinder and switching machine
Structure, the volume of the first cylinder are more than the volume of the second cylinder, and compressor has the first cylinder as level-one cylinder and the second cylinder
As the first working status of secondary cylinder, and the second cylinder is as of level-one cylinder and the first cylinder as secondary cylinder
Two working statuses, switching mechanism are used to make compressor between the first working status and the second working status switch.
Preferably, compressor includes the first intermediate cavity and the second intermediate cavity, and the first intermediate cavity is connected with the first blowdown pipe, the
Two intermediate cavities are connected with the second blowdown pipe, when compressor is in the first working status, working chamber compression of the refrigerant through the first cylinder
Enter the first intermediate cavity afterwards and mixed with tonifying Qi, afterwards into the second cylinder compression, then discharged through the second intermediate cavity；Compressor
During in the second working status, refrigerant enters the second intermediate cavity after the working chamber compression of the second cylinder and is mixed with tonifying Qi, it
Enter the first cylinder compression afterwards, then discharged through the first intermediate cavity.
Preferably, compressor further includes upper spacer, lower clapboard and lower flange, and the first cylinder is located at below the second cylinder, on
By being set in sequence in up and down between the first cylinder and the second cylinder, lower flange is arranged on below the first cylinder for partition plate and lower clapboard,
First intermediate cavity is located on lower flange, and the second intermediate cavity is located on upper spacer.
Preferably, when compressor is in the second working status, the swept volume of the first cylinder is V1, the work of the second cylinder
Volume is V2, and the air compensation of the second intermediate cavity is M, and refrigerant density is ρ, wherein M >=(V1-V2) ρ.
Preferably, switching mechanism includes multiple regulation pipes and regulating valve, and regulation pipe and regulating valve cooperate, and make compressor
Switch between the first working status and the second working status.
Preferably, regulation pipe includes the first air intake duct, the second air intake duct, the first blowdown pipe, the second blowdown pipe, first exhaust
Pipe, second exhaust pipe, the first connecting tube and the second connecting tube, the first air intake duct are connected to the working chamber of the first cylinder, and second inhales
Tracheae is connected to the working chamber of the second cylinder, and downtake pipe is connected to the first intermediate cavity, and second exhaust pipe is connected in second
Between chamber, the first end of the first connecting tube connects the working chamber of the second cylinder, and second end is connected to the first intermediate cavity, the second connecting tube
First end be connected to the working chamber of the first cylinder, second end is connected to the second intermediate cavity, the first air intake duct and the second air intake duct
One of them selectively connects, and one of the first blowdown pipe and the second blowdown pipe selectively connect, downtake pipe and
One of second exhaust pipe selectively connects, and one of the first connecting tube and second connecting tube selectively connect.
Preferably, regulation pipe includes the first air intake duct, the second air intake duct, the first blowdown pipe, the second blowdown pipe, first exhaust
Pipe, second exhaust pipe, the first connecting tube and the second connecting tube, compressor further include mixer, and the first air intake duct is connected to first
The working chamber of cylinder, the second air intake duct are connected to the working chamber of the second cylinder, and downtake pipe is connected to the first intermediate cavity, and second
Exhaust pipe is connected to the second intermediate cavity, and the first end of the first blowdown pipe is connected to the first intermediate cavity, and second end is connected to mixer,
The first end of second blowdown pipe is connected to the second intermediate cavity, and second end is connected to mixer, the first end connection of the first connecting tube
The working chamber of second cylinder, second end are connected to mixer, and the first end of the second connecting tube is connected to the working chamber of the first cylinder,
Second end is connected to mixer, and one of the first air intake duct and the second air intake duct selectively connect, the first blowdown pipe and
One of two blowdown pipes selectively connect, and one of downtake pipe and second exhaust pipe selectively connect, and first
One of connecting tube and second connecting tube selectively connect.
Preferably, regulating valve includes the first control valve, the second control valve, third control valve, the 4th control valve, the 5th control
Valve, the 6th control valve, the 7th control valve and the 8th control valve, break-make of first control valve for controlling the first air intake duct, second
Control valve is used for the break-make for controlling the second air intake duct, and third control valve is used for the break-make for controlling the first blowdown pipe, the 4th control valve
For controlling the break-make of the second blowdown pipe, the 5th control valve is used for the break-make for controlling downtake pipe, and the 6th control valve is used to control
The break-make of second exhaust pipe processed, the 7th control valve are used for the break-make for controlling the first connecting tube, and the 8th control valve is used to control second
The break-make of connecting tube.
Preferably, switching mechanism includes switching valve, and switching valve includes air inlet, first interface, second interface, the 3rd interface
With the 4th interface, first interface is connected to the working chamber of the first cylinder, and second interface is connected to the first intermediate cavity, and the 3rd interface connects
The second cylinder is connected to, the 4th interface is connected to the second intermediate cavity, when compressor is in the first working status, air inlet and first
Orifice, second interface and the 4th orifice, the 3rd interface are closed；When compressor is in the second working status, air inlet
Mouth and the 4th orifice, the 3rd interface are connected with first interface, and second interface is closed.
Preferably, lower flange includes the first row gas port radially extended, and upper spacer includes the second exhaust port radially extended,
Compressor further includes the first exhaust passage for total exhaust outlet that compressor is connected to from the first intermediate cavity, and from the second intermediate cavity
The second exhaust passage of total exhaust outlet of compressor is connected to, first exhaust passage and second exhaust passage are isolated.
Preferably, compressor further includes the upper flange being arranged on above the second cylinder, and first exhaust passage is vertically successively
By lower flange, the first cylinder, lower clapboard, upper spacer, the second cylinder and upper flange, second exhaust passage passes through successively vertically
Upper spacer, the second cylinder and upper flange.
Preferably, being provided with first exhaust passage prevents refrigerant return to the first check valve of the first intermediate cavity, second
Being provided with exhaust passage prevents refrigerant return to the second check valve of the second intermediate cavity.
Preferably, first row gas port is connected to second interface, and second exhaust port is connected to the 3rd interface.
Preferably, the first air supply passage is additionally provided with lower flange, is additionally provided with the second air supply passage on upper spacer, first
The 3rd check valve for preventing that tonifying Qi from flowing back is provided with air supply passage, prevent tonifying Qi from flowing back the is provided with the second air supply passage
Four check valves.
Preferably, each air supply passage has check-valve port, and each check valve is slidably disposed in corresponding air supply passage,
Check valve has the plug of closure check-valve port and the air supply passage at check valve both ends is connected after plug opens check-valve port
Communicating passage.
Preferably, check-valve port and the matched seal of plug are conical opening, and plug is bulb or conical head.
Preferably, the outer circumferential side of check valve and the air supply passage shape of check valve position match, check valve
Periphery has trimming, and communicating passage is formed between trimming and the internal perisporium of air supply passage.
Preferably, the outer circumferential side of check valve and the air supply passage shape of check valve position match, plug side
Check valve on have connection check valve both ends air supply passage intercommunicating pore, intercommunicating pore forms communicating passage.
According to another aspect of the present invention, there is provided a kind of air conditioner, including compressor, the compressor are above-mentioned compression
Machine.
In accordance with a further aspect of the present invention, there is provided a kind of progress control method of compressor, including：Obtain outdoor environment
Temperature；Switch the compression sequence of the first cylinder and the second cylinder according to outdoor environment temperature, wherein the volume of the first cylinder is more than
The volume of second cylinder.
Preferably, included according to the step of compression sequence of outdoor environment temperature the first cylinder of switching and the second cylinder：When
When compressor is under refrigeration mode and outdoor environment temperature is higher than the first preset temperature, or when compressor is under heating mode
And outdoor environment temperature, when being less than the second preset temperature, control compressor is in the first cylinder as level-one cylinder and the second cylinder
The first working status as secondary cylinder；When compressor be under refrigeration mode and outdoor environment temperature be less than or equal to first
During preset temperature, or when compressor is under heating mode and outdoor environment temperature is greater than or equal to the second preset temperature, control
Compressor processed is in the second cylinder as the second working status of level-one cylinder and the first cylinder as secondary cylinder.
Preferably, further included according to the step of compression sequence of outdoor environment temperature the first cylinder of switching and the second cylinder：
When compressor is in the first working status, control working chamber of the refrigerant through the first cylinder mixes it in the first intermediate cavity with tonifying Qi
Afterwards, into the second cylinder compression, then discharged through the second intermediate cavity；When compressor is in the second working status, refrigerant is controlled
Working chamber through the second cylinder is after the second intermediate cavity is mixed with tonifying Qi, into the first cylinder compression, then through among first
Chamber is discharged.
Compressor provided by the invention, including the first cylinder, the second cylinder and switching mechanism, the volume of the first cylinder are more than
The volume of second cylinder, compressor have the first cylinder as the first work of level-one cylinder and the second cylinder as secondary cylinder
State, and the second cylinder are used as the second working status of level-one cylinder and the first cylinder as secondary cylinder, switching mechanism
Switch in making compressor between the first working status and the second working status.During compressor operating, work as compressor
When pressure ratio is smaller, compressor can be made to be in the second working status so that the pressure difference of level-one cylinder is smaller, so as to be reduced or eliminated
Influence of the level-one cylinder back pressure cavity to pump housing efficiency, in addition, cavity pressure is controllable than relatively low among at this time, is conducive to tonifying Qi
With the raising of Energy Efficiency Ratio.When compressor pressure ratio is larger, compressor can be made to be in the first working status so that level-one cylinder and
Secondary cylinder can form two second compressions, and compression ratio can be assigned to two cylinders so that the compression ratio of each cylinder is not
Can be too big, so as to reduce leakage, the volumetric efficiency of compressor is improved, improves the work efficiency of compressor.
Brief description of the drawings
Fig. 1 is the structure diagram of the pump assembly of the compressor of the embodiment of the present invention；
Fig. 2 is the structure diagram of the compressor of first embodiment of the invention；
Fig. 3 is the structure diagram of the compressor of second embodiment of the invention；
Fig. 4 is the structure diagram of the compressor of third embodiment of the invention；
Fig. 5 is the refrigerant flow graph when compressor of third embodiment of the invention is in the first working status；
Fig. 6 is the refrigerant flow graph when compressor of third embodiment of the invention is in the second working status；
Fig. 7 is the dimensional structure diagram of the compressor of third embodiment of the invention；
Fig. 8 is the schematic cross-sectional view of the compressor of the embodiment of the present invention；
Fig. 9 is the decomposition texture schematic diagram of the check valve of the compressor of the embodiment of the present invention；
Figure 10 is the schematic cross-sectional view of the check valve of the compressor of the embodiment of the present invention；
Figure 11 is the overlooking the structure diagram of the pump body structure of the compressor of the embodiment of the present invention；
Figure 12 be Figure 11 A-A to schematic cross-sectional view；
Figure 13 is the progress control method flow chart of the compressor of the embodiment of the present invention.
Reference numeral is expressed as：
1st, the first cylinder；2nd, the second cylinder；3rd, the first intermediate cavity；4th, the second intermediate cavity；5th, the first blowdown pipe；6th, second mend
Tracheae；7th, upper spacer；8th, lower clapboard；9th, lower flange；10th, the first air intake duct；11st, the second air intake duct；12nd, downtake pipe；13、
Second exhaust pipe；14th, the first connecting tube；15th, the second connecting tube；16th, mixer；17th, the first control valve；18th, the second control valve；
19th, third control valve；20th, the 4th control valve；21st, the 5th control valve；22nd, the 6th control valve；23rd, the 7th control valve；24th, the 8th
Control valve；25th, switching valve；26th, air inlet；27th, first interface；28th, second interface；29th, the 3rd interface；30th, the 4th interface；
31st, first row gas port；32nd, second exhaust port；33rd, first exhaust passage；34th, second exhaust passage；35th, total exhaust outlet；36th, on
Flange；37th, the first check valve；38th, the second check valve；39th, the 3rd check valve；40th, the 4th check valve；41st, the first air supply passage；
42nd, the second air supply passage；43rd, check-valve port；44th, plug；45th, trimming；46th, communicating passage；47th, valve seat.
Embodiment
Dual-level enthalpy adding compressor is compared with single cylinder compressor, and Dual-level enthalpy adding compressor is under low-temperature heating operating mode, heating capacity
And efficiency advantage is clearly, but when medium temperature is freezed, efficiency is but not so good as common single cylinder compressor.Reason is low temperature system
When hot, pressure ratio is big, and pump housing efficiency can be improved by being divided into two second compressions, in addition, refrigerant specific volume is big during low temperature, poor inspiration, tonifying Qi
Compression mechanism heat and Energy Efficiency Ratio can also be greatly improved.But during medium temperature refrigeration, pressure ratio is little, but level-one cylinder and two
The volumetric ratio of level cylinder be it is fixed, will compressor be divided into two second compressions, the common single cylinder compression of compressor back pressure cavity volumetric ratio
Machine is big, and adiabatic efficiency etc. is also poorer than common single cylinder compressor, result under this operating mode, and Dual-level enthalpy adding compressor Energy Efficiency Ratio is on the contrary not
Such as common single cylinder compressor.In order to solve the problems, such as this, spy proposes the scheme of the application.
With reference to shown in referring to Fig. 1 to Figure 12, according to an embodiment of the invention, compressor includes the first cylinder 1, the second cylinder
2 and switching mechanism, the volume of the first cylinder 1 is more than the volume of the second cylinder 2, and there is compressor the first cylinder 1 to be used as level-one gas
The first working status of cylinder and the second cylinder 2 as secondary cylinder, and the second cylinder 2 are used as level-one cylinder and the first cylinder 1
As the second working status of secondary cylinder, switching mechanism be used to making compressor the first working status and the second working status it
Between switch.
During compressor operating, when compressor pressure ratio is smaller, i.e., under normal temperature operating mode, compressor can be made
In the second working status so that less second cylinder of volume is used as level-one cylinder, and the first larger cylinder of volume is made
Used for secondary cylinder, since the pressure difference of level-one cylinder is smaller, thus level-one cylinder back pressure cavity can be reduced or eliminated to the pump housing
The influence of efficiency, in addition, cavity pressure is controllable than relatively low among at this time, is conducive to tonifying Qi and the raising of Energy Efficiency Ratio.Work as pressure
When contracting machine pressure ratio is larger, i.e., under ultralow temperature heating and superhigh temperature cooling condition, compressor can be made to be in the first working status, made
Less second cylinder of volume is obtained to use as secondary cylinder, the first larger cylinder of volume is used as level-one cylinder, due to
Level-one cylinder and secondary cylinder can form two second compressions, therefore compression ratio can be assigned to two cylinders so that Mei Geqi
The compression ratio of cylinder so as to reduce leakage, improves the volumetric efficiency of compressor, improves the work energy of compressor all without too greatly
Effect.In addition, during such as low-temperature heating, compressor air suction specific volume is big, it is desirable to which the inspiratory capacity of compressor is larger, therefore sets big volume
First cylinder, 1 cylinder is level-one cylinder, larger equivalent to compressor displacement.
Preferably, compressor includes the first intermediate cavity 3 and the second intermediate cavity 4, and the first intermediate cavity 3 is connected with the first blowdown pipe
5, the second intermediate cavity 4 is connected with the second blowdown pipe 6, when compressor is in the first working status, work of the refrigerant through the first cylinder 1
Enter the first intermediate cavity 3 after chamber compression and mixed with tonifying Qi, compressed afterwards into the second cylinder 2, then through 4 row of the second intermediate cavity
Go out；When compressor is in the second working status, refrigerant through the second cylinder 2 working chamber compression after enter the second intermediate cavity 4 and with
Tonifying Qi mixes, and compresses into the first cylinder 1, is then discharged through the first intermediate cavity 3 afterwards.
In the bad working environments of high pressure ratio, such as ultralow temperature heating or superhigh temperature refrigeration, control compressor is in the first work
State, larger 1 air-breathing of the first cylinder of compressor volume, after the compression of the first cylinder 1, drains into the first intermediate cavity 3, comes at the same time
From the refrigerant tonifying Qi of the intermediate pressure of system to the first intermediate cavity 3, at two the refrigerant in source in the first intermediate cavity 3 mixing heel row extremely
Less second cylinder 2 of volume, by 2 second-compressed of the second cylinder after being sucked by the second cylinder 2, is discharged into the second intermediate cavity 4,
Compression work is completed, is then exhausted.
When common compressor ratio is not severe when operating mode, such as common cooling in summer or winter heating, compressor are in second
Working status, less second cylinder, 2 air-breathing of compressor volume, after the compression of the second cylinder 2, drains into the second intermediate cavity 4, together
When the intermediate pressure refrigerant tonifying Qi from system to the second intermediate cavity 4, the refrigerant in source mixes heel row in the second intermediate cavity 4 at two
To the first cylinder 1, compressed after being sucked by the first cylinder 1 through the first cylinder 1, be discharged into the first intermediate cavity 3, complete compression work,
Then it is exhausted.
When compressor operating environment pressure ratio is smaller, pressure ratio is not to influence the principal element of compressor efficiency, if at this time will
Pressure ratio is assigned to two cylinders, and compressor redundant gap volume is big, and adiabatic efficiency is not high, on the contrary so that compressor efficiency reduces.Work as pressure
When contracting machine use environment pressure ratio is smaller, using small volume cylinder as level-one cylinder, large volume cylinder is as secondary cylinder, compression
After the compression of machine level-one cylinder air-breathing, it is compressed with reference to the tonifying Qi from system, then by secondary cylinder suction.Appropriate appearance is set
Product ratio, after adjusting tonifying Qi, can cause level-one cylinder not compression refrigerant or not compression refrigerant substantially, equivalent to acting only as or base
This equivalent to act only as conveying refrigerant and isolation secondary cylinder air-breathing and tonifying Qi effect.Above-mentioned isolation secondary cylinder air-breathing is with mending
The effect of gas, refers to that tonifying Qi will not be back to evaporator.So set, play compression, pressure equivalent to substantially secondary cylinder
Contracting equivalent to a still cylinder than not or substantially unallocated to two cylinders, not being compressed, so set, compressor Energy Efficiency Ratio
Compare high.
Preferably, compressor further includes upper spacer 7, lower clapboard 8 and lower flange 9, and the first cylinder 1 is located under the second cylinder 2
Side, by being set in sequence in up and down between the first cylinder 1 and the second cylinder 2, lower flange 9 is arranged on first for upper spacer 7 and lower clapboard 8
The lower section of cylinder 1, the first intermediate cavity 3 are located on lower flange 9, and the second intermediate cavity 4 is located on upper spacer 7.
In the present embodiment, the cavity of bottom opening is provided with upper spacer 7, the bottom of upper spacer 7 is provided with sealing
The lower clapboard 8 of the opening, so that cavity seals to form the second intermediate cavity 4.Such a structure is opened due to the side of upper spacer 7
Mouthful, and intermediate cavity is cooperatively formed with lower clapboard 8, therefore the shaping difficulty of the second intermediate cavity 4 can be reduced, reduce shaping cost.
Similarly, the cavity of bottom opening is also equipped with lower flange 9, is also equipped with sealing the bottom opening in 9 bottom of lower flange
Lower cover, so that forming the first intermediate cavity 3 in lower flange 9.
Preferably, when compressor is in the second working status, the swept volume of the first cylinder 1 is V1, the work of the second cylinder 2
It is V2 to make volume, and the air compensation of the second intermediate cavity 4 is M, and refrigerant density is ρ, wherein M >=(V1-V2) ρ.
During using small volume cylinder as level-one cylinder, air compensation need to be more than or equal to the gas corresponding to two volume of cylinder differences
Amount, to prevent two level large volume cylinder poor inspiration, causes expiratory phase refrigerant to expand, produces idle work.Due to secondary cylinder
Gas of the air-breathing after level-one cylinder compression and be more than level-one cylinder from system intermediate pressure refrigerant, secondary cylinder volume
Volume, if air compensation is too small, can cause secondary cylinder to reduce in expiratory phase, refrigerant expansion, pressure, this stage can produce
Idle work, influences compressor efficiency.Assuming that the swept volume of the first cylinder 1 is V1, the swept volume of the second cylinder 2 is V2, is mended
Tolerance is M, and level-one cylinder suction location refrigerant density is ρ, when small volume cylinder is level-one cylinder, it is necessary to meet：M≥(V1-
V2) ρ, consequently, it is possible to be to ensure that two level large volume cylinder inspiratory capacity is met the requirements, avoids cylinder from flogging a dead horse.
Preferably, switching mechanism includes multiple regulation pipes and regulating valve, and regulation pipe and regulating valve cooperate, and make compressor
Switch between the first working status and the second working status.Pass through the mutual cooperation of regulation pipe and regulating valve, thus it is possible to vary cold
Matchmaker flows to, so as to conveniently realize switching of the compressor between the first working status and the second working status.
Preferably, with reference to shown in Figure 2, first embodiment according to the present invention, regulation pipe include the first air intake duct 10,
Second air intake duct 11, the first blowdown pipe 5, the second blowdown pipe 6, downtake pipe 12, second exhaust pipe 13,14 and of the first connecting tube
Second connecting tube 15, the first air intake duct 10 are connected to the working chamber of the first cylinder 1, and the second air intake duct 11 is connected to the second cylinder 2
Working chamber, downtake pipe 12 is connected to the first intermediate cavity 3, and second exhaust pipe 13 is connected to the second intermediate cavity 4, the first connection
The first end of pipe 14 connects the working chamber of the second cylinder 2, and second end is connected to the first intermediate cavity 3, and the first of the second connecting tube 15
End is connected to the working chamber of the first cylinder 1, and second end is connected to the second intermediate cavity 4, the first air intake duct 10 and the second air intake duct 11
One of them is selectively connected, one of them is selectively connected for the first blowdown pipe 5 and the second blowdown pipe 6, downtake pipe
12 one of them is selectively connected with second exhaust pipe 13, the first connecting tube 14 and the second connecting tube 15 one of them may be selected
Ground connects.
Preferably, regulating valve include the first control valve 17, the second control valve 18, third control valve 19, the 4th control valve 20,
5th control valve 21, the 6th control valve 22, the 7th control valve 23 and the 8th control valve 24, the first control valve 17 are used to control first
The break-make of air intake duct 10, the second control valve 18 are used for the break-make for controlling the second air intake duct 11, and third control valve 19 is used to control the
The break-make of one blowdown pipe 5, the 4th control valve 20 are used for the break-make for controlling the second blowdown pipe 6, and the 5th control valve 21 is used to control the
The break-make of one exhaust pipe 12, the 6th control valve 22 are used for the break-make for controlling second exhaust pipe 13, and the 7th control valve 23 is used to control
The break-make of first connecting tube 14, the 8th control valve 24 are used for the break-make for controlling the second connecting tube 15.
In the present embodiment, in the big bad working environments of pressure ratio, such as ultralow temperature heating, the second control valve 18 is closed, and first
Control valve 17 is opened, and the 7th control valve 23 is opened, and the 8th control valve 24 is closed, and the 4th control valve 20 is closed, third control valve 19
Open, the 5th control valve 21 is closed, and the 6th control valve 22 is opened；Compressor large volume cylinder 1 air-breathing of i.e. the first cylinder, through excessive
After volume cylinder compression, the first intermediate cavity 3 is drained into, is simultaneously from the refrigerant tonifying Qi of intermediate pressure of system to the first intermediate cavity 3,
The refrigerant in source mixes heel row to small volume cylinder i.e. the second cylinder 2 in the first intermediate cavity 3 at two, after being sucked by small volume cylinder
Compressed by small volume cylinder, be discharged into the second intermediate cavity 4, complete work, enclosure interior, motor lower end are vented to by pipeline
Position, refrigerant pass through compressor electric motor again, are discharged into after being cooled down to motor from upper cover exhaust pipe into system condenser.
In the less operating mode of pressure ratio, such as common cooling in summer operating mode, the second control valve 18 are opened, and the first control valve 17 closes
Close, the 7th control valve 23 is closed, and the 8th control valve 24 is opened, and the 4th control valve 20 is opened, and third control valve 19 is closed, the 5th control
Valve 21 processed is opened, and the 6th control valve 22 is closed；Compressor small volume cylinder 2 air-breathing of i.e. the second cylinder, by small volume cylinder pressure
After contracting, the second intermediate cavity 4 is drained into, is simultaneously from the intermediate pressure refrigerant tonifying Qi of system to the second intermediate cavity 4, source is cold at two
Matchmaker mixes heel row to large volume cylinder i.e. the first cylinder 1 in the second intermediate cavity 4, through large volume cylinder after being sucked by large volume cylinder
Compression, is discharged into the first intermediate cavity 3, completes work, be vented to enclosure interior, motor lower end position by pipeline, refrigerant passes through again
Overcompression electromechanics machine, is discharged into system condenser after being cooled down to motor from upper cover exhaust pipe.
With reference to shown in Figure 3, according to the third embodiment of the invention, regulation pipe includes the first air intake duct 10, second and inhales
Tracheae 11, the first blowdown pipe 5, the second blowdown pipe 6, downtake pipe 12, second exhaust pipe 13, the first connecting tube 14 and second connect
Adapter 15, compressor further include mixer 16, and the first air intake duct 10 is connected to the working chamber of the first cylinder 1, the second air intake duct 11
The working chamber of the second cylinder 2 is connected to, downtake pipe 12 is connected to the first intermediate cavity 3, and second exhaust pipe 13 is connected to second
Intermediate cavity 4, the first end of the first blowdown pipe 5 are connected to the first intermediate cavity 3, and second end is connected to mixer 16, the second blowdown pipe 6
First end be connected to the second intermediate cavity 4, second end is connected to mixer 16, and the first end of the first connecting tube 14 connects the second gas
The working chamber of cylinder 2, second end are connected to mixer 16, and the first end of the second connecting tube 15 is connected to the working chamber of the first cylinder 1,
Second end is connected to mixer 16, one of them is selectively connected for the first air intake duct 10 and the second air intake duct 11, the first tonifying Qi
One of pipe 5 and the second blowdown pipe 6 selectively connect, and one of downtake pipe 12 and second exhaust pipe 13 may be selected
Ground connects, and one of the first connecting tube 14 and the second connecting tube 15 selectively connect.In the present embodiment, the number of control valve
Amount and setting position are essentially identical with first embodiment, and I will not elaborate.
In the big bad working environments of pressure ratio, such as ultralow temperature heating, the second control valve 18 is closed, and the first control valve 17 is opened,
7th control valve 23 is opened, and the 8th control valve 24 is closed, and the 4th control valve 20 is closed, and third control valve 19 is opened, the 5th control
Valve 21 is closed, and the 6th control valve 22 is opened.Compressor large volume cylinder 1 air-breathing of i.e. the first cylinder, compresses by large volume cylinder
Afterwards, the first intermediate cavity 3 is drained into, then is drained into by the first intermediate cavity 3 outside compressor, is mixed with the refrigerant of the intermediate pressure from system
Small volume cylinder i.e. the second cylinder 2 is drained into after conjunction again, is compressed after being sucked by small volume cylinder by small volume cylinder, is discharged into
Two intermediate cavities 4, complete work, are vented to enclosure interior motor lower end position by pipeline, refrigerant passes through compressor electric motor, to electricity
It is discharged into after machine cooling from upper cover exhaust pipe into system condenser.
In the less operating mode of pressure ratio, such as common cooling in summer operating mode, the second control valve 18 are opened, and the first control valve 17 closes
Close, the 7th control valve 23 is closed, and the 8th control valve 24 is opened, and the 4th control valve 20 is opened, and third control valve 19 is closed, the 5th control
Valve 21 processed is opened, and the 6th control valve 22 is closed.Compressor small volume cylinder 2 air-breathing of i.e. the second cylinder, by small volume cylinder pressure
After contracting, the second intermediate cavity 4 is drained into, then drained into by the second intermediate cavity 4 outside compressor and cold with the intermediate pressure from system
After matchmaker's mixing, then large volume cylinder i.e. the first cylinder 1 is drained into, compress, be discharged into through large volume cylinder after being sucked by large volume cylinder
To the first intermediate cavity 3, work to be completed, enclosure interior motor lower end position is vented to by pipeline, refrigerant passes through compressor electric motor,
It is discharged into after being cooled down to motor from upper cover exhaust pipe into system condenser.
In the present embodiment, due to adding mixer 16, intermediate cavity tonifying Qi and level-one cylinder exhaust can be caused
Mixer 16 is connected to, level-one exhaust and tonifying Qi mixing are realized in mixer 16, connecting line can be reduced, simplifies connection
Structure, reduces link cost, reduces connection leakage.
With reference to shown in referring to Fig. 4 to Fig. 7, according to the third embodiment of the invention, switching mechanism includes switching valve 25, switching
Valve 25 includes air inlet 26, first interface 27, second interface 28, the 3rd interface 29 and the 4th interface 30, and first interface 27 connects
To the working chamber of the first cylinder 1, second interface 28 is connected to the first intermediate cavity 3, and the 3rd interface 29 is connected to the second cylinder 2, the
Four interfaces 30 are connected to the second intermediate cavity 4, and when compressor is in the first working status, air inlet 26 connects with first interface 27
Logical, second interface 28 is connected with the 4th interface 30, and the 3rd interface 29 is closed；When compressor is in the second working status, air inlet
Mouth 26 is connected with the 4th interface 30, and the 3rd interface 29 is connected with first interface 27, and second interface 28 is closed.In the present embodiment,
It can be adjusted by the spool position of switching valve 25, realize each interface and the first cylinder 1 and the second cylinder 2 of switching valve 25
The adjusting of air inlet order, it is simple in structure, it is easy to adjust, the quantity of connecting tube is greatly reduced, control difficulty is simplified, reduces
Cost of implementation.
Preferably, lower flange 9 includes the first row gas port 31 radially extended, and upper spacer 7 includes the second row radially extended
Gas port 32, compressor further include the first exhaust passage 33 for total exhaust outlet 35 that compressor is connected to from the first intermediate cavity 3, and
The second exhaust passage 34 of total exhaust outlet 35 of compressor, first exhaust passage 33 and second row are connected to from the second intermediate cavity 4
Gas passage 34 is isolated.Preferably, first row gas port 31 is connected to second interface 28, and second exhaust port 32 is connected to the 3rd interface
29。
In the present embodiment, first row gas port 31 and second exhaust port 32 are to be used for realization to connect with the interface of switching valve 25
Connect, so as to adjust the order of connection of exhaust outlet, realize the adjusting to gas compression order, first exhaust passage 33 and second exhaust
Passage 34 is that total exhaust outlet 35 that compressor is sent into for the refrigerant for completing final compression is discharged, and first exhaust passage 33 is
For the compressed air in the first intermediate cavity 3 to be discharged by total exhaust outlet 35, second exhaust passage 34 is used in second
Between compressed air in chamber 4 discharged by total exhaust outlet 35, therefore, when the first cylinder 1 is used as level-one cylinder, the second cylinder 2 is made
For secondary cylinder when, first row gas port 31 is connected with the air entry of the second cylinder 2, and second exhaust port 32 is closed by spool,
First exhaust passage 33 is closed, and prevents the pressure gas directly in the first cylinder 1 from connecting total exhaust outlet 35 and discharging, second exhaust is led to
Road 34 is opened, and the high-pressure gaseous refrigerant of second-compressed is carried out through second exhaust passage 34 from total exhaust outlet 35 by the second cylinder 2
Discharge.
When the second cylinder 2 is used as level-one cylinder, when the first cylinder 1 is as secondary cylinder, first row gas port 31 is closed by spool
Close, second exhaust port 32 is connected with the air entry of the first cylinder 1, and first exhaust passage 33 is opened, second exhaust passage 34
Close, the gaseous coolant in the second cylinder 2 is entered in the first cylinder 1 from second exhaust port 32 after being mixed with tonifying Qi and pressed
Contracting, the high-pressure gaseous refrigerant after the completion of compression are discharged through first exhaust passage 33 from total exhaust outlet 35.
Preferably, compressor further includes the upper flange 36 for being arranged on the top of the second cylinder 2, and first exhaust passage 33 is vertically
Pass through lower flange 9, the first cylinder 1, lower clapboard 8, upper spacer 7, the second cylinder 2 and upper flange 36, second exhaust passage 34 successively
Pass through upper spacer 7, the second cylinder 2 and upper flange 36 successively vertically.
Preferably, being provided with first exhaust passage 33 prevents refrigerant return to the first check valve 37 of the first intermediate cavity 3,
Being provided with second exhaust passage 34 prevents refrigerant return to the second check valve 38 of the second intermediate cavity 4.In 1 conduct of the first cylinder
Level-one cylinder, when the second cylinder 2 is as secondary cylinder, the gaseous coolant pressure in compressor chamber body that is connected with total exhaust outlet 35
More than the first cylinder 1 by the gaseous coolant pressure after one stage of compression, therefore the first check valve 37 is closed, gaseous coolant without
Method is entered in compressor chamber body through first exhaust passage 33, is merely able to enter compressor cavity via second exhaust passage 34
It is interior.Similarly, when the first cylinder 1 is used as secondary cylinder, and the second cylinder 2 is as level-one cylinder, second exhaust passage 34 is by the
Two check valves 38 are closed, and can not directly be connected with compressor cavity.By setting check valve, it can conveniently realize and two are arranged
The individual event conducting control of gas passage, control cost is relatively low, and control method is simple, easy to implement.Certainly, two check valves herein
It can also be substituted with other control valves, control valve needs the working status of controller combination compressor to carry out at this time
Control.
Preferably, the first air supply passage 41 is additionally provided with lower flange 9, the second air supply passage is additionally provided with upper spacer 7
42, the 3rd check valve 39 for preventing that tonifying Qi from flowing back is provided with the first air supply passage 41, is provided with the second air supply passage 42 anti-
Only the 4th check valve 40 of tonifying Qi reflux.Level-one cylinder is used as in the first cylinder 1, when the second cylinder 2 is as secondary cylinder, at this time
Gaseous coolant pressure in first intermediate cavity 3 is less than superfeed pressure, and the gaseous coolant pressure in the second intermediate cavity 4 is more than tonifying Qi pressure
Power, therefore the first air supply passage 41 is opened, the second air supply passage 42 is closed, and realizes the tonifying Qi in the first intermediate cavity 3.When the first gas
Cylinder 1 is used as secondary cylinder, and when the second cylinder 2 is as level-one cylinder, the gaseous coolant pressure in the first intermediate cavity 3, which is more than, at this time mends
Atmospheric pressure, the gaseous coolant pressure in the second intermediate cavity 4 is less than superfeed pressure, therefore the second air supply passage 42 is opened, and first mends
Gas passage 41 is closed, and realizes the tonifying Qi in the second intermediate cavity 4.
In the present embodiment, switching valve 25 is two five-way valves, when spool is in left side station, system evaporator connection
First cylinder, 1 air-breathing, the first intermediate cavity 3 connection 2 air-breathing of the second cylinder.Second intermediate cavity 4 and the junction of valve are closed.When
When spool is in right working position, system evaporator connects the second cylinder 2, and the second intermediate cavity 4 is connected with 1 air-breathing of the first cylinder, and first
The junction of intermediate cavity 3 and valve is closed.
When the operation of compressor big compression ratio operating mode, during such as ultralow temperature heating condition and superhigh temperature cooling condition, big volume
The first cylinder 1 be level-one cylinder, the second cylinder 2 of small volume is secondary cylinder.Valve is left side station, and the first cylinder 1 is inhaled
It is compressed after gas, the first intermediate cavity 3 is discharged into after compression, while the 3rd check valve 39 is opened, tonifying Qi enters the first intermediate cavity 3,
At two after the refrigerant mixing in source, 2 air-breathing of the second cylinder is entered back into by main valve, after being compressed by the second cylinder 2, is discharged into second
Between chamber 4, with 4 pressure rise of the second intermediate cavity, the 4th check valve 40 is closed, the second check valve 38 open discharge gas；Complete
Compression.Wherein since pressure at expulsion is more than 3 pressure of the first intermediate cavity, so the first check valve 37 is to close.
When the little operating mode of compressor pressure ratio, such as common cooling in summer.Second cylinder 2 of small volume is level-one cylinder,
First cylinder 1 of big volume is secondary cylinder.Carry out the refrigerant of flash-pot by switching valve 25, into the second cylinder 2, the second gas
After the compression of 2 air-breathing of cylinder, the second intermediate cavity 4 is discharged into.4th check valve 40 is opened, and tonifying Qi enters the second intermediate cavity 4, source at two
After refrigerant mixing, 1 air-breathing of the first cylinder is entered back into by switching valve 25, after being compressed by the first cylinder 1, is discharged into the first intermediate cavity 3,
With 3 pressure rise of the first intermediate cavity, the 3rd check valve 39 is closed, and the first check valve 37 opens discharge gas；Complete compression.Its
In 4 pressure of the second intermediate cavity is more than due to pressure at expulsion, so the second check valve 38 is to close.
Preferably, each air supply passage has check-valve port 43, and each check valve is slidably disposed on corresponding air supply passage
Interior, check valve has the plug 44 of closure check-valve port 43 and connects check valve both ends after plug 44 opens check-valve port 43
Air supply passage communicating passage 46.Check-valve port 43 can be directly molded on each part of pump assembly, can also be
Valve seat 47 is set in air supply passage, then check-valve port 43 is arranged on valve seat 47.Check valve can with air supply passage
Check-valve port 43 cooperatively forms one-way valve structures, can also be engaged to form one-way valve structures with valve seat 47.In the present embodiment,
Valve seat 47 is provided with communicating passage 46, check valve is arranged in valve seat 47, and is engaged with valve seat 47, realizes one-way conduction
Effect.Catching step is provided with communicating passage 46, then 47 backstop of valve seat passes through air intake duct or exhaust pipe on catching step
Pipe structure realize to the axially position of valve seat 47, prevent valve seat 47 to be subjected to displacement during control, ensure one-way valve structures
Stability and reliability.
Preferably, check-valve port 43 and 44 matched seal of plug are conical opening, and plug 44 is bulb or conical head,
It can more efficiently ensure the sealing performance between plug 44 and check-valve port 43.
Preferably, the outer circumferential side of check valve and the air supply passage shape of check valve position match, check valve
Periphery has trimming 45, and communicating passage 46 is formed between trimming 45 and the internal perisporium of air supply passage.Better than check valve periphery with
The internal perisporium of air supply passage matches, therefore can ensure that communicating passage 46 acts on the slide-and-guide of check valve, prevents unidirectional
Lateral tilt occurs for valve, improves stability and reliability during check valve movement, improves the one-way conduction performance of check valve.In list
Trimming 45 is set to the periphery of valve, since trimming 45 is located at the periphery of plug 44, and plug 44 can carry out check-valve port 43
Closure, therefore the difficulty of processing of check valve can be reduced, conveniently realize the conducting at check valve both ends.Preferably, in this implementation
In example, trimming 45 is three, is uniformly distributed along the periphery of check valve.
Preferably, in one embodiment not shown in figure, outer circumferential side and the check valve position of check valve
Air supply passage shape matches, and has the intercommunicating pore of the air supply passage at connection check valve both ends on the check valve of 44 side of plug,
Intercommunicating pore forms communicating passage 46.
According to an embodiment of the invention, air conditioner includes above-mentioned compressor.
With reference to shown in Figure 13, according to an embodiment of the invention, the progress control method of compressor includes：Obtain outdoor
Environment temperature；Switch the compression sequence of the first cylinder 1 and the second cylinder 2 according to outdoor environment temperature, wherein the appearance of the first cylinder 1
Volume of the product more than the second cylinder 2.
In general, the direct parameter that outdoor environment temperature can be characterized as compressor operating situation, therefore, using room
External environment temperature selects suitable control strategy to judge the working condition of compressor according to the working condition of compressor,
The work efficiency of compressor can be effectively improved, the raising for the service ability of compressor has direct effect.
In compressor operating, the working environment of compressor can be determined by outdoor environment temperature information, for example,
During compressor cooling, when outdoor environment temperature is less than or equal to T1, compressor normal work, when outdoor environment temperature is more than T1
When, compressor is in superhigh temperature refrigerating state；When compressor heats, when outdoor environment temperature is greater than or equal to T2, compression
Machine works normally, and when outdoor environment temperature is less than T2, compressor is in ultralow temperature heating state.In general, the scope of T1
For 30 to 35 degree, the scope of T2 is -15 to -10 degree.Certainly, specific threshold value set can according to actual working environment etc. into
Row is adjusted.
Preferably, included according to the step of compression sequence of outdoor environment temperature the first cylinder 1 of switching and the second cylinder 2：
When compressor is under refrigeration mode and outdoor environment temperature is higher than the first preset temperature, or when compressor is in heating mode
When lower and outdoor environment temperature is less than the second preset temperature, control compressor is in the first cylinder 1 and is used as level-one cylinder and second
First working status of the cylinder 2 as secondary cylinder；When compressor is under refrigeration mode and outdoor environment temperature is less than or waits
When the first preset temperature, or when compressor is under heating mode and outdoor environment temperature is greater than or equal to the second preset temperature
When, control compressor is in the second cylinder 2 as the second working status of level-one cylinder and the first cylinder 1 as secondary cylinder.
Preferably, also wrapped according to the step of compression sequence of outdoor environment temperature the first cylinder 1 of switching and the second cylinder 2
Include：When compressor is in the first working status, control working chamber of the refrigerant through the first cylinder 1 is in the first intermediate cavity 3 and tonifying Qi
After mixing, compress into the second cylinder 2, then discharged through the second intermediate cavity 4；When compressor is in the second working status,
Working chamber of the refrigerant through the second cylinder 2 is controlled to be compressed after the second intermediate cavity 4 is mixed with tonifying Qi into the first cylinder 1, then
Discharged through the first intermediate cavity 3.
For those skilled in the art it is easily understood that on the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.With
Only it is the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
On the premise of departing from the technology of the present invention principle, some improvement and modification can also be made, these improvements and modifications also should be regarded as this
The protection domain of invention.
Claims (22)
1. a kind of compressor, it is characterised in that including the first cylinder (1), the second cylinder (2) and switching mechanism, first gas
The volume of cylinder (1) is more than the volume of second cylinder (2), the compressor have the first cylinder (1) as level-one cylinder and
First working status of second cylinder (2) as secondary cylinder, and the second cylinder (2) are used as level-one cylinder and the first cylinder
(1) the second working status as secondary cylinder, the switching mechanism are used to make the compressor in the first working status and the
Switch between two working statuses.
2. compressor according to claim 1, it is characterised in that the compressor includes the first intermediate cavity (3) and second
Intermediate cavity (4), first intermediate cavity (3) are connected with the first blowdown pipe (5), and second intermediate cavity (4) is connected with the second benefit
Tracheae (6),
When the compressor is in the first working status, refrigerant enters first after the working chamber compression of first cylinder (1)
Intermediate cavity (3) is simultaneously mixed with tonifying Qi, is compressed afterwards into second cylinder (2), is then arranged through second intermediate cavity (4)
Go out；
When the compressor is in the second working status, refrigerant enters second after the working chamber compression of second cylinder (2)
Intermediate cavity (4) is simultaneously mixed with tonifying Qi, is compressed afterwards into first cylinder (1), is then arranged through first intermediate cavity (3)
Go out.
3. compressor according to claim 2, it is characterised in that the compressor further includes upper spacer (7), lower clapboard
(8) be located at lower flange (9), first cylinder (1) below second cylinder (2), the upper spacer (7) and it is described under every
By being set in sequence in up and down between first cylinder (1) and second cylinder (2), the lower flange (9) is arranged on plate (8)
Below first cylinder (1), first intermediate cavity (3) is located on the lower flange (9), the second intermediate cavity (4) position
In on the upper spacer (7).
4. compressor according to claim 2, it is characterised in that described when the compressor is in the second working status
The swept volume of first cylinder (1) is V1, and the swept volume of second cylinder (2) is V2, the air compensation of the second intermediate cavity (4)
For M, refrigerant density is ρ, wherein M >=(V1-V2) ρ.
5. compressor according to claim 2, it is characterised in that the switching mechanism includes multiple regulation pipes and adjusting
Valve, the regulation pipe and regulating valve cooperate, and the compressor is cut between the first working status and the second working status
Change.
6. compressor according to claim 5, it is characterised in that the regulation pipe includes the first air intake duct (10), second
Air intake duct (11), first blowdown pipe (5), second blowdown pipe (6), downtake pipe (12), second exhaust pipe (13),
First connecting tube (14) and the second connecting tube (15), first air intake duct (10) are connected to the work of first cylinder (1)
Chamber, second air intake duct (11) are connected to the working chamber of second cylinder (2), and the downtake pipe (12) is connected to institute
The first intermediate cavity (3) is stated, the second exhaust pipe (13) is connected to second intermediate cavity (4), first connecting tube (14)
First end connect the working chamber of second cylinder (2), second end is connected to first intermediate cavity (3), and described second connects
The first end of adapter (15) is connected to the working chamber of first cylinder (1), and second end is connected to second intermediate cavity (4),
One of first air intake duct (10) and described second air intake duct (11) selectively connect, first blowdown pipe (5)
Selectively connected with one of second blowdown pipe (6), the downtake pipe (12) and the second exhaust pipe
One of (13) selectively connect, one of first connecting tube (14) and second connecting tube (15) may be selected
Ground connects.
7. compressor according to claim 5, it is characterised in that the regulation pipe includes the first air intake duct (10), second
Air intake duct (11), the first blowdown pipe (5), the second blowdown pipe (6), downtake pipe (12), second exhaust pipe (13), the first connection
Pipe (14) and the second connecting tube (15), the compressor further include mixer (16), and first air intake duct (10) is connected to institute
State the working chamber of the first cylinder (1), second air intake duct (11) is connected to the working chamber of second cylinder (2), and described
One exhaust pipe (12) is connected to first intermediate cavity (3), and the second exhaust pipe (13) is connected to second intermediate cavity
(4), the first end of first blowdown pipe (5) is connected to first intermediate cavity (3), and second end is connected to the mixer
(16), the first end of second blowdown pipe (6) is connected to second intermediate cavity (4), and second end is connected to the mixer
(16), the first end of first connecting tube (14) connects the working chamber of second cylinder (2), and second end is connected to described mixed
Clutch (16), the first end of second connecting tube (15) are connected to the working chamber of first cylinder (1), and second end is connected to
One of the mixer (16), first air intake duct (10) and described second air intake duct (11) selectively connect, institute
State one of the first blowdown pipe (5) and described second blowdown pipe (6) selectively to connect, the downtake pipe (12) and institute
One of second exhaust pipe (13) is stated selectively to connect, first connecting tube (14) and second connecting tube (15) its
One of selectively connect.
8. the compressor according to claim 6 or 7, it is characterised in that the regulating valve includes the first control valve (17), the
Two control valves (18), third control valve (19), the 4th control valve (20), the 5th control valve (21), the 6th control valve (22), the 7th
Control valve (23) and the 8th control valve (24), first control valve (17) are used to control the logical of first air intake duct (10)
Disconnected, second control valve (18) is used for the break-make for controlling second air intake duct (11), and the third control valve (19) is used for
The break-make of first blowdown pipe (5) is controlled, the 4th control valve (20) is used to control the logical of second blowdown pipe (6)
Disconnected, the 5th control valve (21) is used for the break-make for controlling the downtake pipe (12), and the 6th control valve (22) is used for
The break-make of the second exhaust pipe (13) is controlled, the 7th control valve (23) is used to control the logical of first connecting tube (14)
Disconnected, the 8th control valve (24) is used for the break-make for controlling second connecting tube (15).
9. compressor according to claim 3, it is characterised in that the switching mechanism includes switching valve (25), described to cut
Changing valve (25) includes air inlet (26), first interface (27), second interface (28), the 3rd interface (29) and the 4th interface (30),
The first interface (27) is connected to the working chamber of first cylinder (1), and the second interface (28) is connected to described first
Intermediate cavity (3), the 3rd interface (29) are connected to second cylinder (2), and the 4th interface (30) is connected to described
Two intermediate cavities (4), when the compressor is in the first working status, the air inlet (26) connects with the first interface (27)
Logical, the second interface (28) connects with the 4th interface (30), and the 3rd interface (29) is closed；At the compressor
When the second working status, the air inlet (26) connects with the 4th interface (30), the 3rd interface (29) with it is described
First interface (27) connects, and the second interface (28) is closed.
10. compressor according to claim 9, it is characterised in that the lower flange (9) includes the first row radially extended
Gas port (31), the upper spacer (7) include the second exhaust port (32) radially extended, and the compressor is further included from described first
Intermediate cavity (3) is connected to the first exhaust passage (33) of total exhaust outlet (35) of the compressor, and among described second
Chamber (4) is connected to the second exhaust passage (34) of total exhaust outlet (35) of the compressor, the first exhaust passage (33) and
The second exhaust passage (34) is isolated.
11. compressor according to claim 10, it is characterised in that the compressor, which further includes, is arranged on second gas
Upper flange (36) above cylinder (2), the first exhaust passage (33) is vertically successively by the lower flange (9), described the
One cylinder (1), the lower clapboard (8), the upper spacer (7), second cylinder (2) and the upper flange (36), described
Two exhaust passages (34) pass through the upper spacer (7), second cylinder (2) and the upper flange (36) successively vertically.
12. compressor according to claim 11, it is characterised in that being provided with the first exhaust passage (33) prevents
To the first check valve (37) of first intermediate cavity (3), be provided with the second exhaust passage (34) prevents refrigerant return
Refrigerant return to second intermediate cavity (4) the second check valve (38).
13. compressor according to claim 10, it is characterised in that the first row gas port (31) is connected to described second
Interface (28), the second exhaust port (32) are connected to the 3rd interface (29).
14. compressor according to claim 3, it is characterised in that be additionally provided with the first tonifying Qi on the lower flange (9) and lead to
Road (41), the second air supply passage (42) is additionally provided with the upper spacer (7), is provided with first air supply passage (41) anti-
Only the 3rd check valve (39) of tonifying Qi reflux, it is unidirectional that prevent tonifying Qi from flowing back the 4th is provided with second air supply passage (42)
Valve (40).
15. the compressor according to claim 12 or 14, it is characterised in that each air supply passage has check-valve port
(43), each check valve is slidably disposed in the corresponding air supply passage, and the check valve, which has, blocks the list
Plug (44) to valve port (43) and open the check-valve port (43) in the plug (44) and connect the check valve two afterwards
The communicating passage (46) of the air supply passage at end.
16. compressor according to claim 15, it is characterised in that the check-valve port (43) and the plug (44) phase
The seal of cooperation is conical opening, and the plug (44) is bulb or conical head.
17. compressor according to claim 15, it is characterised in that the outer circumferential side of the check valve and the check valve institute
Air supply passage shape at position matches, and the periphery of the check valve has a trimming (45), the trimming (45) with it is described
The communicating passage (46) is formed between the internal perisporium of air supply passage.
18. compressor according to claim 15, it is characterised in that the outer circumferential side of the check valve and the check valve institute
Air supply passage shape at position matches, and has on the check valve of plug (44) side and connects the check valve
The intercommunicating pore of the air supply passage at both ends, the intercommunicating pore form the communicating passage (46).
19. a kind of air conditioner, including compressor, it is characterised in that the compressor is any one of claim 1 to 18
Compressor.
A kind of 20. progress control method of compressor, it is characterised in that including：
Obtain outdoor environment temperature；
Switch the compression sequence of the first cylinder (1) and the second cylinder (2) according to outdoor environment temperature, wherein the first cylinder (1)
Volume is more than the volume of the second cylinder (2).
21. progress control method according to claim 20, it is characterised in that described according to outdoor environment temperature switching the
The step of compression sequence of one cylinder (1) and the second cylinder (2), includes：
When compressor is under refrigeration mode and outdoor environment temperature is higher than the first preset temperature, or when compressor is in heating
Under pattern and when outdoor environment temperature is less than the second preset temperature, control compressor is in the first cylinder (1) and is used as level-one cylinder
And second first working status of the cylinder (2) as secondary cylinder；
When compressor is under refrigeration mode and outdoor environment temperature is less than or equal to the first preset temperature, or at compressor
Under heating mode and when outdoor environment temperature is greater than or equal to the second preset temperature, control compressor is in the second cylinder (2)
As the second working status of level-one cylinder and the first cylinder (1) as secondary cylinder.
22. progress control method according to claim 21, it is characterised in that described according to outdoor environment temperature switching the
The step of compression sequence of one cylinder (1) and the second cylinder (2), further includes：
When compressor is in the first working status, control working chamber of the refrigerant through the first cylinder (1) the first intermediate cavity (3) with
After tonifying Qi mixing, compress into the second cylinder (2), then discharged through the second intermediate cavity (4)；
When compressor is in the second working status, control working chamber of the refrigerant through the second cylinder (2) the second intermediate cavity (4) with
After tonifying Qi mixing, compress into the first cylinder (1), then discharged through the first intermediate cavity (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710934047.9A CN107956687B (en) | 2017-10-10 | 2017-10-10 | Compressor, operation control method thereof and air conditioner |
| PCT/CN2018/108595 WO2019072118A1 (en) | 2017-10-10 | 2018-09-29 | Compressor and operation control method thereof, and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710934047.9A CN107956687B (en) | 2017-10-10 | 2017-10-10 | Compressor, operation control method thereof and air conditioner |
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| CN107956687A true CN107956687A (en) | 2018-04-24 |
| CN107956687B CN107956687B (en) | 2024-01-26 |
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| Country | Link |
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| CN (1) | CN107956687B (en) |
| WO (1) | WO2019072118A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019072118A1 (en) * | 2017-10-10 | 2019-04-18 | 珠海凌达压缩机有限公司 | Compressor and operation control method thereof, and air conditioner |
| CN110630503A (en) * | 2018-06-25 | 2019-12-31 | 上海海立电器有限公司 | Compressor and exhaust structure and exhaust method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151338A (en) * | 2021-12-08 | 2022-03-08 | 珠海格力电器股份有限公司 | Pump body subassembly, compressor, air conditioner |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019072118A1 (en) | 2019-04-18 |
| CN107956687B (en) | 2024-01-26 |
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